RANGERS fans went quackers yesterday when they spotted their club’s official website selling rubber ducks decked out in Celtic colours.

Ibrox fans couldn’t believe their eyes when they saw the green-and-white bath toys, complete with the badge of their arch rivals, for sale on the club’s Megastore website.

The Team Rubber Duck has Celtic’s badge emblazoned on its chest and sits on a green-and-white raft. The ducks are sold in a variety of team colours, including English teams Chelsea, Liverpool, Newcastle and Spurs.

They cost £4.99 – one penny cheaper than a similar product on Celtic’s official web store.

The site says: “If you’re looking for a great gift for any special occasion, this football team rubber duck is ideal for any fan. It is laid in a rubber dinghy and has the team colours and badge to show support – even at bath time.”

Rangers fans’ forums almost went into meltdown after the duck was spotted.

On Rangersmedia.co.uk, Carsons Army posted: “Selling your main rival’s merchandise? That is just daffy.”

On supporters’ website Follow Follow, Gers fan Marsh said: “I would trace the culprit and fire them. That is not an accident.”

But Gladbear posted: “If you click on the drop-down menu for colour, you’ll see lots of other teams like Man City and Chelsea.

The list is in alphabetical order and Celtic happen to come first. Lets not make a drama out of nothing, no need to alert the beaks.”

A Rangers spokeswoman said: “We’re not trying to duck the issue but this was due to an error by suppliers and has been rectified.”